Why does Alipay need you to blink and shake your head to verify the avatar? What is this for?

It's hard to understand why Ma Yun's father made us blink and shake our heads when he gave us face. I always feel stupid.

What we know is that Ma Yun's father's face support can bring us not only convenience, but also a sense of security. The advantage of Alipay may be its high security, which has become a key part of many consumers' consideration. What we know is that face recognition or verifying the avatar with Alipay is a way of biometric identification. What does the so-called biometric mean?

0 1 biometrics &; Brush face payment

What we must know is that biometrics is to judge whether the account we use is our own through artificial intelligence, terminals and other devices, and to verify the identity of people through comparison.

Encyclopedia says that personal identity can be identified by computer, optics, acoustics, biosensors and biostatistics, using the inherent physiological characteristics of the human body (such as fingerprints, face images, irises, etc.). ) and behavioral characteristics (such as handwriting, voice, gait, etc. ).

Let's talk about Alipay's face brushing support. In fact, when paying or unlocking, we can solve the authentication problem without verifying the password. In some supermarkets, you should often see face-brushing payment, which can accurately measure three-dimensional face data such as facial contour, nose and lips, and combine the living body detection technology and big data control system to form the ability to pay.

Ma Yun's Alipay is actually leading in this field. Through image processing, biometric identification, data model analysis, compared with our faces, similar values are analyzed, thus unlocking.

02 a wink &; shake one's head

This is actually to ensure the living. Because someone gave a photo, can I unlock it? Alipay generally collects 360-degree facial features when logging in. In fact, 3D in vivo detection technologies such as blinking can provide higher security.

03 security issues

In fact, these are all issues to improve our safety. What we know is that brush face recognition and payment guarantee can improve the safe use of Alipay.

Before answering this question, explain a noun term-biological characteristics.

Biometrics refers to each individual's independent, unique, measurable and recognizable physiological characteristics and behavior patterns. Usually, biological characteristics can be divided into two categories: physiology and behavior. Physiological characteristics generally refer to biological fingerprints, facial images, irises, palm prints, etc. Behavioral characteristics generally refer to background exercises such as biological pronunciation and handwriting.

Alipay's avatar authentication is a way of biometric identification, which uniquely identifies a person through his facial features. Since it is biometric identification, it is necessary to verify whether the person or thing to be identified belongs to a creature. Photos and images belong to objects, even if the facial features are very similar to real people, you can't blink and shake your head. Or even if you can blink and shake your head, your five senses will change.

So shaking your head and blinking can be said to be a check on whether the authenticated person is a creature. Blinking or shaking your head at the camera can also prevent some lawless elements from guiding ordinary people to transfer facial recognition. It is conceivable that if you don't shake your head and blink, others will get your Alipay account, and you only need a photo or a plaster model to transfer money. What a terrible thing!

Biopsy to prevent fraud, hahaha.

Why does Alipay need you to blink and shake your head to verify the avatar? What is this for? Friends who can find this problem should be very careful in daily life, so why do you need to blink or shake your head when recognizing faces? Let me tell you something.

Biometric identification, an important aspect of face recognition, is the key point of face recognition. In fact, there is no doubt that the user's basic external biometric features are recognized by face.

For organisms, the key to identification is a basic feature of organisms, and this feature is unique, unrepeatable and easy to identify. The simplest and most common biological features are fingerprint recognition, iris recognition and palmprint recognition. These are the basic features that can't be copied, so they can be used as an important basis for face recognition.

Alipay's face recognition is the basic feature of scanning biology through the camera. At present, the face recognition function is divided into 2D scanning and 3D scanning, and 3D face recognition is indeed better in security, which is adopted by the face recognition function technology on Apple's mobile phone. Of course, some Android phones also use this feature.

In the process of face recognition, users need to open their mouths and blink, which is the most basic facial feature function. On the other hand, if we don't open our mouth and blink when verifying the face, then anyone who uses the photo can unlock the phone.

Good question. I'm glad to answer this question.

When performing some sensitive operations, the APP often asks users to blink, shake their heads, nod, open their mouths, and so on. Face the phone. The purpose of doing this is only to verify whether the customer is currently operating, thus reducing the operational risk. The whole verification process includes the following two parts:

First, front-end face detection

At the front end (APP end), customers are required to make some random actions to judge whether it is alive or not, and actions are required to avoid using static photos to bypass detection. When the customer completes the specified action according to the instruction, the APP will collect N pictures of the customer and submit them to the background for comparison.

Second, the background image contrast

In the background (server), after receiving the picture information sent back by the front end, it is compared with the standard photo through the comparison algorithm. Before June 20 17, all online verification services in the market can obtain the standard photos of users (photos on ID cards), and can compare images through their own algorithms. However, after June 20 17, the comparison with the standard photos can only be handed over to the Ministry of Public Security.

The technology described by the subject should be a widely used face recognition technology in previous years. In recent years, great breakthroughs have been made in face recognition technology, but due to the overall policy restrictions, breakthroughs and innovations are concentrated in the process of portrait collection and inspection.

First of all, the collection methods are not limited to blinking and shaking your head, but lip language and silent collection and recognition methods have been widely used; Compared with the traditional collection method, the new collection method is more random and relatively safer.

Secondly, for the collected content, photos can no longer meet the security requirements. Many applications collect a short video and check it through certain algorithms. After the on-site verification passed, 1 photo was extracted from the video and submitted to the Ministry of Public Security for image comparison.

In addition, with the upgrade of mobile devices, infrared factors are added in the process of portrait detection, which can better prevent photo and video attacks.

This is dynamic verification to prevent counterfeiting.

Look at the new vision of intellectual property from a unique personal perspective and provide professional intellectual property management consulting services!

This has two purposes:

1, make sure you are alive in front of the camera, not a video or a photo;

2. Make sure that the camera is not a pre-recorded video, but a real person who can be verified according to random instructions.

After in vivo testing, quality testing and cross-comparison will also be carried out;

How to improve the accuracy of face detection, how to improve the accuracy of face key point detection, how to prevent mask attacks, how to optimize images, etc. ...

At present, this technology has been widely used in the fields of Internet finance and economy enjoyment.

Domestic contempt technology is very leading in face recognition.

This is to ensure the security of your account and prevent it from being stolen by others!

Prove that this person is alive, not someone else posing as a photo, or dead.

Its purpose is to prove that you are still alive.

Last year, a bank's face recognition system issued an alarm when identifying a transaction, and the backstage staff were stunned when they saw it, because the face was obviously a corpse.

Then call the police to arrest people.

It turned out that after someone killed someone, they wanted to transfer money through the deceased's mobile banking. He thought that face recognition only needed someone's face, so he put the dead on it for identification. Who knows, the machine gave an alarm and recognized it as a dead man.

Prove alive